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HT400 Rectangular fi re damper - UNI EN 1366-2 Certifi ed - UNI EN 13501-3 Classifi ed
TO RESTORE DAMPER OPERATION FOLLOW THE INSTRUCTIONS OUTLINED HERE IN REVERSE ORDER.
NB:
THE ACTUATOR’S CROSSHEAD CLAMPING SCREW AT THE PIN HEAD MUST BE TIGHTENED TILL IT REACHES THE SCREW SUPPORT
ON THE BLACK INDICATOR ARROW, WITHOUT ANY PRESSING.
1
4.3
Dampers with Belimo electric actuator
mod. BF/BAE thermal fuse
4.3.1
Procedure for replacing dampers with height < 250 mm
1. Check the condition of
the damper
DISCONNECT
the actua-
tor and wait for the damp-
er to close completely.
2.
Loosen the anti-rotation screw using
a size 8 spanner and the actuator’s
crosshead clamping screw at the con-
trol pin.
3.
Slip the actuator off the control pin,
taking care with the 12
x
12 board
adapter
(1)
4.
Dismantle the thermal fuse by unscrewing the two cross-
head screws.
5.
Remove the thermal fuse and replace either the fuse alone
or the entire actuator/thermal fuse arrangement.